Mechanical arm for detection equipment

The utility model relates to the technical field of mechanical arms, in particular to a mechanical arm for detection equipment, which comprises a working table, a guide rail arranged above the working table, a movable seat arranged above the guide rail, a mechanical arm main body arranged above the movable seat, the mechanical arm main body comprises a first shaft, a second shaft, a third shaft, a fourth shaft, a fifth shaft and a grabbing component, a tooth block is arranged on the inner side wall of the moving groove, the moving seat is located above the guide rail and comprises a bottom plate, a connecting plate is arranged above the bottom plate, a motor groove is formed in the lower surface of the connecting plate, a motor is arranged in the motor groove, the fifth shaft comprises a fifth shaft body, a fixing groove is formed in the lower portion of the fifth shaft body, and a ball groove is formed in the inner wall of the outer side of the fixing groove. According to the structural design, the guide rai